2 File Associations
.M21 File Extension
TIP: Run a free scan for .M21 file extension errors.
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| File Description | Multimedia file format developed by the Moving Picture Experts Group (MPEG); uses a "meta-box" format that contains time-based media, such as audio and video data, as well as metadata that describes the contents of the file. MPEG-21 may also include DRM information for copy-protection. |
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| Program(s) that open .M21 files |
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| Updated 11/7/2007 |
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| File Description | Media file created with the AXMEDIS Editor; saved in a packaged content distribution format and may contain multiple types of media; may also include descriptive metadata, and DRM copy-protection information. AXMEDIS MPEG-21 files may also be saved with an .MP21 file extension. |
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| Program(s) that open .M21 files |
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| Updated 9/22/2008 |
